1, different uses: glossy file is mainly used for polishing metal surfaces. It has a special coating that can provide better polishing effect and make the metal surface smoother and brighter. Used in metal crafts, jewelry, watches and clocks and other fields to increase the aesthetic feeling and texture of products. Ordinary files are mainly used for trimming and trimming materials. It can be used to remove the unevenness of the material surface, trim the edge, adjust the shape and so on. Ordinary files are used in woodworking, metalworking, plastic processing and other fields to achieve accurate size and shape requirements.

2, the blade characteristics are different: the blade of smooth file usually uses high hardness materials, such as tungsten carbide. The surface is specially treated and coated with a layer of polishing oil, which makes the blade smoother and more wear-resistant, and can reduce the adhesion and accumulation of materials. This design makes the smooth file more suitable for polishing and can produce a more delicate and smooth surface effect. The blade of ordinary file is usually made of high carbon steel and other materials, which has high hardness and wear resistance. The surface of the blade is usually not specially treated to better meet the dressing requirements of different materials. The tooth shape and density of common file can also be different from that of smooth file to adapt to different dressing tasks.